US4809109A - Magnetoresistive read transducer and method for making the improved transducer - Google Patents
Magnetoresistive read transducer and method for making the improved transducer Download PDFInfo
- Publication number
- US4809109A US4809109A US07/173,496 US17349688A US4809109A US 4809109 A US4809109 A US 4809109A US 17349688 A US17349688 A US 17349688A US 4809109 A US4809109 A US 4809109A
- Authority
- US
- United States
- Prior art keywords
- layer
- antiferromagnetic
- ternary
- magnetoresistive
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000005290 antiferromagnetic effect Effects 0.000 claims abstract description 16
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 13
- 239000000956 alloy Substances 0.000 claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 239000002885 antiferromagnetic material Substances 0.000 claims description 18
- 239000011572 manganese Substances 0.000 claims description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 11
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 5
- 239000003302 ferromagnetic material Substances 0.000 claims description 4
- 229910000914 Mn alloy Inorganic materials 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims 5
- 229910000640 Fe alloy Inorganic materials 0.000 claims 4
- 229910000990 Ni alloy Inorganic materials 0.000 claims 2
- 238000000151 deposition Methods 0.000 claims 2
- 229910052742 iron Inorganic materials 0.000 claims 2
- 238000000137 annealing Methods 0.000 abstract description 23
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 abstract description 22
- 229910015136 FeMn Inorganic materials 0.000 abstract description 17
- 230000008569 process Effects 0.000 abstract description 3
- 229910002058 ternary alloy Inorganic materials 0.000 abstract description 2
- 238000009792 diffusion process Methods 0.000 abstract 1
- 230000005291 magnetic effect Effects 0.000 description 15
- 230000000694 effects Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000005330 Barkhausen effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 229910052715 tantalum Inorganic materials 0.000 description 2
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- HDBDDEFTKCWERY-UHFFFAOYSA-N (6-oxo-7,8,9,10-tetrahydrobenzo[c]chromen-3-yl) benzoate Chemical compound C=1C=C2C=3CCCCC=3C(=O)OC2=CC=1OC(=O)C1=CC=CC=C1 HDBDDEFTKCWERY-UHFFFAOYSA-N 0.000 description 1
- 102100024017 Glycerol-3-phosphate acyltransferase 3 Human genes 0.000 description 1
- 101000904259 Homo sapiens Glycerol-3-phosphate acyltransferase 3 Proteins 0.000 description 1
- 229910016897 MnNi Inorganic materials 0.000 description 1
- 229910003289 NiMn Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000005303 antiferromagnetism Effects 0.000 description 1
- 238000010420 art technique Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 description 1
- UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 0.000 description 1
- 238000005224 laser annealing Methods 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000005418 spin wave Effects 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
- G11B5/39—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects
- G11B5/3903—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects using magnetic thin film layers or their effects, the films being part of integrated structures
- G11B5/399—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects using magnetic thin film layers or their effects, the films being part of integrated structures with intrinsic biasing, e.g. provided by equipotential strips
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/90—Magnetic feature
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49021—Magnetic recording reproducing transducer [e.g., tape head, core, etc.]
- Y10T29/49032—Fabricating head structure or component thereof
- Y10T29/49034—Treating to affect magnetic properties
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49021—Magnetic recording reproducing transducer [e.g., tape head, core, etc.]
- Y10T29/49032—Fabricating head structure or component thereof
- Y10T29/49036—Fabricating head structure or component thereof including measuring or testing
- Y10T29/49043—Depositing magnetic layer or coating
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/11—Magnetic recording head
- Y10T428/1107—Magnetoresistive
- Y10T428/1121—Multilayer
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12465—All metal or with adjacent metals having magnetic properties, or preformed fiber orientation coordinate with shape
Abstract
Description
Claims (8)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/173,496 US4809109A (en) | 1988-03-25 | 1988-03-25 | Magnetoresistive read transducer and method for making the improved transducer |
JP1007893A JPH01248578A (en) | 1988-03-25 | 1989-01-18 | Magnetoresistance converter element and its manufacture |
DE68915040T DE68915040T2 (en) | 1988-03-25 | 1989-02-16 | A magnetoresistive reading transducer and a method for its manufacture. |
EP89301527A EP0334480B1 (en) | 1988-03-25 | 1989-02-16 | Magnetoresistive read transducer and a method for making it |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/173,496 US4809109A (en) | 1988-03-25 | 1988-03-25 | Magnetoresistive read transducer and method for making the improved transducer |
Publications (1)
Publication Number | Publication Date |
---|---|
US4809109A true US4809109A (en) | 1989-02-28 |
Family
ID=22632301
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/173,496 Expired - Fee Related US4809109A (en) | 1988-03-25 | 1988-03-25 | Magnetoresistive read transducer and method for making the improved transducer |
Country Status (4)
Country | Link |
---|---|
US (1) | US4809109A (en) |
EP (1) | EP0334480B1 (en) |
JP (1) | JPH01248578A (en) |
DE (1) | DE68915040T2 (en) |
Cited By (39)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4903158A (en) * | 1988-07-28 | 1990-02-20 | Eastman Kodak Company | MR head with complementary easy axis permanent magnet |
US4918554A (en) * | 1988-09-27 | 1990-04-17 | International Business Machines Corporation | Process for making a shielded magnetoresistive sensor |
US4945397A (en) * | 1986-12-08 | 1990-07-31 | Honeywell Inc. | Resistive overlayer for magnetic films |
US4949039A (en) * | 1988-06-16 | 1990-08-14 | Kernforschungsanlage Julich Gmbh | Magnetic field sensor with ferromagnetic thin layers having magnetically antiparallel polarized components |
EP0414976A2 (en) * | 1989-08-02 | 1991-03-06 | Seagate Technology International | Method of setting the magnetic domain structure of a magneto-resistive sensor |
US5262914A (en) * | 1991-10-18 | 1993-11-16 | International Business Machines Corporation | Magnetoresistive head with enhanced exchange bias field |
WO1993026018A1 (en) * | 1992-06-16 | 1993-12-23 | The Regents Of The University Of California | Giant magnetoresistant single film alloys |
US5315468A (en) * | 1992-07-28 | 1994-05-24 | International Business Machines Corporation | Magnetoresistive sensor having antiferromagnetic layer for exchange bias |
US5385637A (en) * | 1992-12-07 | 1995-01-31 | Read-Rite Corporation | Stabilizing domains in inductive thin film heads |
WO1995014298A1 (en) * | 1993-11-15 | 1995-05-26 | Maxtor Corporation | Selective pulse interdiffusion for magnetoresistive sensors |
US5422621A (en) * | 1993-10-29 | 1995-06-06 | International Business Machines Corporation | Oriented granular giant magnetoresistance sensor |
US5425819A (en) * | 1993-08-31 | 1995-06-20 | Yamaha Corporation | Magnetoresistive material |
US5436777A (en) * | 1991-09-04 | 1995-07-25 | Hitachi, Ltd. | Magnetoresistive head |
US5475550A (en) * | 1992-08-25 | 1995-12-12 | Seagate Technology, Inc. | Enhanced cross-talk suppression in magnetoresistive sensors |
US5485334A (en) | 1992-11-12 | 1996-01-16 | Quantum Peripherals Colorado, Inc. | Magnetoresistive device and method having improved Barkhausen noise suppression |
US5491600A (en) * | 1994-05-04 | 1996-02-13 | International Business Machines Corporation | Multi-layer conductor leads in a magnetoresistive head |
US5503870A (en) * | 1990-02-06 | 1996-04-02 | International Business Machines Corporation | Method for producing thin film magnetic structure |
US5532892A (en) * | 1995-06-05 | 1996-07-02 | Quantum Peripherals Colorado, Inc. | Soft adjacent layer biased magnetoresistive device incorporating a natural flux closure design utilizing coplanar permanent magnet thin film stabilization |
US5573809A (en) * | 1995-06-05 | 1996-11-12 | Quantum Peripherals Colorado, Inc. | Process for forming a magnetoresistive device |
EP0762389A1 (en) * | 1995-08-31 | 1997-03-12 | Fujitsu Limited | Magnetoresistive head, manufacturing method of the head and magnetic recording/reproducing drive |
US5633092A (en) * | 1991-12-10 | 1997-05-27 | British Technology Group Ltd. | Magnetostrictive material |
US5654854A (en) * | 1995-11-30 | 1997-08-05 | Quantum Corporation | Longitudinally biased magnetoresistive sensor having a concave shaped active region to reduce Barkhausen noise by achieving a substantially single magnetic domain state |
US5664316A (en) * | 1995-01-17 | 1997-09-09 | International Business Machines Corporation | Method of manufacturing magnetoresistive read transducer having a contiguous longitudinal bias layer |
US5666247A (en) * | 1994-02-04 | 1997-09-09 | Seagate Technology, Inc. | No-field, low power FeMn deposition giving high exchange films |
US5668687A (en) * | 1993-12-29 | 1997-09-16 | International Business Machines Corporation | Magnetoresistive sensor employing an exchange-bias enhancing layer with a variable-composition transition region |
US5712751A (en) * | 1994-03-17 | 1998-01-27 | Kabushiki Kaisha Toshiba | Magnetic sensor and magnetic recording-reproducing head and magnetic recording-reproducing apparatus using same |
US5748399A (en) * | 1997-05-13 | 1998-05-05 | International Business Machines Corporation | Resettable symmetric spin valve |
US5768067A (en) * | 1995-09-19 | 1998-06-16 | Alps Electric Co., Ltd. | Magnetoresistive head using exchange anisotropic magnetic field with an antiferromagnetic layer |
US5825595A (en) * | 1997-05-13 | 1998-10-20 | International Business Machines Corporation | Spin valve sensor with two spun values separated by an insulated current conductor |
US5844756A (en) * | 1994-06-07 | 1998-12-01 | Alps Electric Co., Ltd. | Magnetoresistive head having manganese diffusion layer |
US5849422A (en) * | 1994-03-24 | 1998-12-15 | Nec Corporation | Spin valve film |
US5850323A (en) * | 1995-06-29 | 1998-12-15 | Fujitsu Limited | Magnetoresistive head and magnetic recording drive |
US5910344A (en) * | 1996-10-07 | 1999-06-08 | Alps Electric Co., Ltd. | Method of manufacturing a magnetoresistive sensor |
US5982177A (en) * | 1997-08-08 | 1999-11-09 | Florida State University | Magnetoresistive sensor magnetically biased in a region spaced from a sensing region |
US6046892A (en) * | 1997-10-01 | 2000-04-04 | Fujitsu Limited | Magnetoresistive head with improved underlayer |
US6094328A (en) * | 1994-08-01 | 2000-07-25 | Alps Electric Co., Ltd. | Thin-film magnetic head with antiferromagnetic layer and hard magnetic layers arranged to bias a magnetoresistive device |
US6118622A (en) * | 1997-05-13 | 2000-09-12 | International Business Machines Corporation | Technique for robust resetting of spin valve head |
US6230390B1 (en) * | 1998-10-30 | 2001-05-15 | Headway Technologies, Inc. | Canted longitudinal patterned exchange biased dual-stripe magnetoresistive (DSMR) sensor element and method for fabrication thereof |
US6301088B1 (en) | 1998-04-09 | 2001-10-09 | Nec Corporation | Magnetoresistance effect device and method of forming the same as well as magnetoresistance effect sensor and magnetic recording system |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5029291A (en) * | 1990-04-10 | 1991-07-02 | Knogo Corporation | Electromagnetic sensor element and methods and apparatus for making and using same |
JP2725977B2 (en) * | 1992-08-28 | 1998-03-11 | インターナショナル・ビジネス・マシーンズ・コーポレイション | Magnetoresistive sensor, method of manufacturing the same, and magnetic storage system |
JP6296155B2 (en) * | 2014-05-30 | 2018-03-20 | 株式会社村田製作所 | Anisotropic magnetoresistive element, magnetic sensor and current sensor |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4103315A (en) * | 1977-06-24 | 1978-07-25 | International Business Machines Corporation | Antiferromagnetic-ferromagnetic exchange bias films |
US4713708A (en) * | 1986-10-31 | 1987-12-15 | International Business Machines | Magnetoresistive read transducer |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6032330A (en) * | 1983-08-03 | 1985-02-19 | Shipbuild Res Assoc Japan | Oil-sealed equalizing semiconductor device |
-
1988
- 1988-03-25 US US07/173,496 patent/US4809109A/en not_active Expired - Fee Related
-
1989
- 1989-01-18 JP JP1007893A patent/JPH01248578A/en active Pending
- 1989-02-16 EP EP89301527A patent/EP0334480B1/en not_active Expired - Lifetime
- 1989-02-16 DE DE68915040T patent/DE68915040T2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4103315A (en) * | 1977-06-24 | 1978-07-25 | International Business Machines Corporation | Antiferromagnetic-ferromagnetic exchange bias films |
US4713708A (en) * | 1986-10-31 | 1987-12-15 | International Business Machines | Magnetoresistive read transducer |
Non-Patent Citations (6)
Title |
---|
IEEE Tran. on Mag. MAG 1, Mar. 1965, pp. 63 65, entitled Magnetic Properties of Multilayer Films of FeNi Mn FeNiCo and of FeNi Mn by Massenet et al. * |
IEEE Tran. on Mag. MAG-1, Mar. 1965, pp. 63-65, entitled "Magnetic Properties of Multilayer Films of FeNi--Mn--FeNiCo and of FeNi--Mn" by Massenet et al. |
J. Appl. Phys., vol. 39, No. 2, Feb. 1968, pp. 1389 1390, entitled Spin Wave Resonance in Epitaxial Fe Ni Films and in Coupled Double Layers of Epitaxial Fe Ni and Fe Ni Mn by Waksmann et al. * |
J. Appl. Phys., vol. 39, No. 2, Feb. 1968, pp. 1389-1390, entitled "Spin-Wave Resonance in Epitaxial Fe--Ni Films and in Coupled Double Layers of Epitaxial Fe--Ni and Fe--Ni--Mn" by Waksmann et al. |
J. Appl. Phys., vol. 52, No. 3, Mar. 1981, pp. 2471 2473, entitled Exchange Induced Unidirectional Anisotropy at FeMn Ni 80 Fe 20 Interfaces by Tsang et al. * |
J. Appl. Phys., vol. 52, No. 3, Mar. 1981, pp. 2471-2473, entitled "Exchange Induced Unidirectional Anisotropy at FeMn--Ni80 Fe20 Interfaces" by Tsang et al. |
Cited By (57)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4945397A (en) * | 1986-12-08 | 1990-07-31 | Honeywell Inc. | Resistive overlayer for magnetic films |
US4949039A (en) * | 1988-06-16 | 1990-08-14 | Kernforschungsanlage Julich Gmbh | Magnetic field sensor with ferromagnetic thin layers having magnetically antiparallel polarized components |
US4903158A (en) * | 1988-07-28 | 1990-02-20 | Eastman Kodak Company | MR head with complementary easy axis permanent magnet |
US4918554A (en) * | 1988-09-27 | 1990-04-17 | International Business Machines Corporation | Process for making a shielded magnetoresistive sensor |
EP0414976A2 (en) * | 1989-08-02 | 1991-03-06 | Seagate Technology International | Method of setting the magnetic domain structure of a magneto-resistive sensor |
EP0414976A3 (en) * | 1989-08-02 | 1992-05-06 | Seagate Technology International | Method of setting the magnetic domain structure of a magneto-resistive sensor |
US5503870A (en) * | 1990-02-06 | 1996-04-02 | International Business Machines Corporation | Method for producing thin film magnetic structure |
US5436777A (en) * | 1991-09-04 | 1995-07-25 | Hitachi, Ltd. | Magnetoresistive head |
US5262914A (en) * | 1991-10-18 | 1993-11-16 | International Business Machines Corporation | Magnetoresistive head with enhanced exchange bias field |
US5344669A (en) * | 1991-10-18 | 1994-09-06 | International Business Machines Corporation | Method of manufacture for an improved magnetoresistive read transducer |
US5633092A (en) * | 1991-12-10 | 1997-05-27 | British Technology Group Ltd. | Magnetostrictive material |
US5868910A (en) * | 1992-06-16 | 1999-02-09 | The Regents Of The University Of California | Giant magnetoresistant single film alloys |
WO1993026018A1 (en) * | 1992-06-16 | 1993-12-23 | The Regents Of The University Of California | Giant magnetoresistant single film alloys |
US5315468A (en) * | 1992-07-28 | 1994-05-24 | International Business Machines Corporation | Magnetoresistive sensor having antiferromagnetic layer for exchange bias |
US5436778A (en) * | 1992-07-28 | 1995-07-25 | International Business Machines Corporation | Magnetoresistive sensor having antiferromagnetic exchange bias |
US5475550A (en) * | 1992-08-25 | 1995-12-12 | Seagate Technology, Inc. | Enhanced cross-talk suppression in magnetoresistive sensors |
US5485334A (en) | 1992-11-12 | 1996-01-16 | Quantum Peripherals Colorado, Inc. | Magnetoresistive device and method having improved Barkhausen noise suppression |
US5634260A (en) * | 1992-11-12 | 1997-06-03 | Quantum Peripherals Colorado, Inc. | Method of making a magnetoresistive device having improved Barkhausen noise suppression |
US5385637A (en) * | 1992-12-07 | 1995-01-31 | Read-Rite Corporation | Stabilizing domains in inductive thin film heads |
US5425819A (en) * | 1993-08-31 | 1995-06-20 | Yamaha Corporation | Magnetoresistive material |
US5422621A (en) * | 1993-10-29 | 1995-06-06 | International Business Machines Corporation | Oriented granular giant magnetoresistance sensor |
US5565236A (en) * | 1993-10-29 | 1996-10-15 | International Business Machines Corporation | Method of forming a giant magnetoresistance sensor |
US5561896A (en) * | 1993-11-15 | 1996-10-08 | Voegeli; Otto | Method of fabricating magnetoresistive transducer |
WO1995014298A1 (en) * | 1993-11-15 | 1995-05-26 | Maxtor Corporation | Selective pulse interdiffusion for magnetoresistive sensors |
US5479308A (en) * | 1993-11-15 | 1995-12-26 | Voegeli; Otto | Magnetoresistive transducer including interdiffusion layer |
US5668523A (en) * | 1993-12-29 | 1997-09-16 | International Business Machines Corporation | Magnetoresistive sensor employing an exchange-bias enhancing layer |
US5668687A (en) * | 1993-12-29 | 1997-09-16 | International Business Machines Corporation | Magnetoresistive sensor employing an exchange-bias enhancing layer with a variable-composition transition region |
US5666247A (en) * | 1994-02-04 | 1997-09-09 | Seagate Technology, Inc. | No-field, low power FeMn deposition giving high exchange films |
US5712751A (en) * | 1994-03-17 | 1998-01-27 | Kabushiki Kaisha Toshiba | Magnetic sensor and magnetic recording-reproducing head and magnetic recording-reproducing apparatus using same |
US5849422A (en) * | 1994-03-24 | 1998-12-15 | Nec Corporation | Spin valve film |
US5491600A (en) * | 1994-05-04 | 1996-02-13 | International Business Machines Corporation | Multi-layer conductor leads in a magnetoresistive head |
US5844756A (en) * | 1994-06-07 | 1998-12-01 | Alps Electric Co., Ltd. | Magnetoresistive head having manganese diffusion layer |
US6094328A (en) * | 1994-08-01 | 2000-07-25 | Alps Electric Co., Ltd. | Thin-film magnetic head with antiferromagnetic layer and hard magnetic layers arranged to bias a magnetoresistive device |
US5664316A (en) * | 1995-01-17 | 1997-09-09 | International Business Machines Corporation | Method of manufacturing magnetoresistive read transducer having a contiguous longitudinal bias layer |
US5532892A (en) * | 1995-06-05 | 1996-07-02 | Quantum Peripherals Colorado, Inc. | Soft adjacent layer biased magnetoresistive device incorporating a natural flux closure design utilizing coplanar permanent magnet thin film stabilization |
US5573809A (en) * | 1995-06-05 | 1996-11-12 | Quantum Peripherals Colorado, Inc. | Process for forming a magnetoresistive device |
US5850323A (en) * | 1995-06-29 | 1998-12-15 | Fujitsu Limited | Magnetoresistive head and magnetic recording drive |
EP0762389A1 (en) * | 1995-08-31 | 1997-03-12 | Fujitsu Limited | Magnetoresistive head, manufacturing method of the head and magnetic recording/reproducing drive |
US5761010A (en) * | 1995-08-31 | 1998-06-02 | Fujitsu Limited | Magnetoresistive head, manufacturing method of the head and magnetic recording/reproducing drive |
KR100250555B1 (en) * | 1995-08-31 | 2000-04-01 | 아끼구사 나오유끼 | Magnetoresistive head, manufacturing method of magnetoresistive head, and magnetic recording/reproducing apparatus |
US5784225A (en) * | 1995-09-19 | 1998-07-21 | Alps Electric Co., Ltd. | Manufacturing method for magnetoresistive head having an antiferromagnetic layer of PTMN |
USRE37819E1 (en) * | 1995-09-19 | 2002-08-13 | Alps Electric Co., Ltd. | Manufacturing method for magnetoresistive head having an antiferromagnetic layer of PTMN |
USRE37992E1 (en) * | 1995-09-19 | 2003-02-18 | Alps Electric Co., Ltd. | Magnetoresistive head using exchange anisotropic magnetic field with an antiferromagnetic layer |
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US5982177A (en) * | 1997-08-08 | 1999-11-09 | Florida State University | Magnetoresistive sensor magnetically biased in a region spaced from a sensing region |
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Also Published As
Publication number | Publication date |
---|---|
JPH01248578A (en) | 1989-10-04 |
EP0334480B1 (en) | 1994-05-04 |
DE68915040D1 (en) | 1994-06-09 |
EP0334480A2 (en) | 1989-09-27 |
EP0334480A3 (en) | 1990-06-06 |
DE68915040T2 (en) | 1994-11-17 |
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